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Tube Database (7,341 tube types · 1,270 archive entries)

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

ML-8038

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BrandMachlett
ClassHigh-Mu Triode

Construction

Primary TypeTriode
EnvelopeGlass/Metal
SectionsSingle

Filament / Heater

Materialthoriated-tungsten

Absolute Maximum Ratings

Plate Voltage125000 V
Plate Dissipation5000 W
Grid 1 Voltage-1500 V
Cathode Current175000 mA

Audio Performance

Key Features
  • Switch tube in hard-tube pulse modulators
  • Self-supporting stress-free filament
  • Oil convection cooling

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pulse Modulator60000 V——100115000 mA
Pulse Modulator100000 V——100135000 mA
Pulse Modulator125000 V——100175000 mA

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